TYVM for the responses! Good job(s) of trying to break bad news to me gently. :+) If I'd been honest with myself at the store, I would have admitted a flower that pretty can only be on a super-temperamental/unpredictable plant.
Deborah, that's what I'm thinking too, from the responses & looking up that the species tops out at Z8. It's not the first time I've bought a plant that would be unlikely to be able to be really be happy in the conditions I have to offer, and prob. not the last. ...now to find my coolest spot during winter that's the least windy during summer, that's not in too much sun during the heat of the day, or too much shade... ummm...
We'll always have the pics...!